| Group or Formation |
Period |
Notes |
| Al Rose Formation | Ordovician | |
| Altamira Formation | Neogene | |
| Altamira Shale | Neogene | |
| Antelope Valley Formation | Ordovician | |
| Arvison Formation | Triassic | |
| Asuncion Group/Chico Formation | Cretaceous | |
| Asuncion Group/Forbes Shale | Cretaceous | |
| Asuncion Group/Funks Shale | Cretaceous | |
| Asuncion Group/Moreno Formation | Cretaceous | |
| Asuncion Group/Ragged Valley Shale | Cretaceous | |
| Avawatz Formation | Neogene | |
| Aztec Sandstone | Jurassic | |
| Badger Flat Formation | Ordovician | |
| Baird Formation | Carboniferous | |
| Barrel Spring Formation | Ordovician | |
| Barstow Formation | Neogene | |
| Barstow Formation | Neogene | |
| Battery Formation | | |
| Bautista Formation | | |
| Bedrock Spring Formation | Neogene | |
| Bird Spring Formation | Permian, Carboniferous | |
| Bonanza King Formation | Cambrian | |
| Bonanzan King Formation | Cambrian | |
| Bopesta Formation | Neogene | |
| Bragdon Formation | Carboniferous | |
| Branch Canyon Formation | Neogene | |
| Brawley Formation | | |
| Briones Formation | Neogene | |
| Brock Shale | Triassic | |
| Budden Canyon Formation | Cretaceous | |
| Cache Formation | | |
| Cajon Valley Beds Formation | Neogene | |
| Caliente Formation | Neogene | |
| Campito Formation | Cambrian | |
| Capay Formation | Paleogene | |
| Capistrano Formation | Neogene | |
| Carrara Formation | Cambrian | |
| Chanac Formation | Neogene | |
| Chatsworth Formation | Cretaceous | |
| Chico Formation | Cretaceous | |
| Chico Group/Moreno Formation | Cretaceous | |
| Chloropagus Formation | Neogene | |
| Conglomerate Mesa Formation | Permian | |
| Copper Canyon Formation | Neogene | |
| Coso Formation | Neogene | |
| Crowder Formation | Neogene | |
| Darwin Canyon Formation | Permian | |
| Debris Dam Formation | Cretaceous | |
| Deep Spring Formation | Cambrian | |
| Dekkas Formation | Permian | |
| Delmar Formation | | |
| Diablo Formation | Neogene | |
| Diligencia Formation | | |
| Disaster Peak Formation | Neogene | |
| Domengine Formation | Paleogene | |
| Dove Spring Formation | Neogene | |
| Drakes Bay Formation | Neogene | |
| Ely Springs Dolomite | Ordovician | |
| Etchegoin Formation | Neogene | |
| Falor Formation | | |
| Fernando Formation | Neogene | |
| Fernando Formation | Neogene | |
| Forbes Formation | Cretaceous | |
| Foreman Formation | Jurassic | |
| Franciscan Formation | Jurassic | |
| Franciscan Formation | Jurassic | |
| Freeman Silt Formation | Neogene | |
| Friars Formation | Paleogene | |
| Funks Formation | Cretaceous | |
| Gazelle Formation | Silurian | |
| Goler Formation | Paleogene | |
| Goodhue Formation | Permian | |
| Goodwin Formation | Ordovician | |
| Great Valley Formation | Cretaceous | |
| Great Valley Group/Antelope Shale | Cretaceous | |
| Great Valley Group/Budden Canyon Formation | Cretaceous | |
| Great Valley Group/Crack Canyon Formation | Cretaceous | |
| Great Valley Group/Gravelly Flat Formation | Cretaceous | |
| Great Valley Group/Lodoga Formation | Cretaceous | |
| Great Valley Group/Moreno Formation | Cretaceous | |
| Great Valley Group/Stony Creek Formation | Jurassic | |
| Green Valley Formation | Neogene | |
| Gregg Ranch Formation | Ordovician | |
| Hardgrave Formation | Jurassic | |
| Harkless Formation | Cambrian | |
| Harold Formation | | |
| Hector Formation | Neogene | |
| Hidden Valley Dolomite | Devonian | |
| Hinchman Formation | Jurassic | |
| Hookton Formation | | |
| Hornbrook Formation | Cretaceous | |
| Horned Toad Formation | Neogene | |
| Horseshoe Gulch Formation | Ordovician | |
| Horseshoe Gulch unit Formation | Ordovician | |
| Hosselkus Formation | Triassic | |
| Hosselkus Limestone | Triassic | |
| Hungry Valley Formation | Neogene | |
| Imperial Formation | Neogene | |
| Imperial Group/Deguynos Formation | Neogene | |
| Jalama Formation | Cretaceous | |
| Jewett Sand Formation | Neogene, Paleogene | |
| Joaquin Formation | Cretaceous | |
| Josephine Formation | Jurassic | |
| Juncal Formation | Paleogene | |
| Kangaroo Creek Formation | Devonian, Silurian, Ordovician | |
| Kangaroo Ranch Formation | Ordovician | |
| Kern River Formation | Neogene | |
| Kern River Beds Formation | Neogene | |
| Kramer Beds Formation | Neogene | |
| Kreyenhagen Formation | Paleogene | |
| Kreyenhagen Shale | Paleogene | |
| La Habra Formation | | |
| La Jolla Formation | Paleogene | |
| Ladd Formation | Cretaceous | |
| Ladera Sandstone | Neogene | |
| Laguna Seca Formation | Paleogene, Cretaceous | |
| Lake Mathews Formation | Neogene | |
| Latham Shale | Cambrian | |
| Livermore Gravels Formation | Neogene | |
| Llajas Formation | Paleogene | |
| Locatelli Formation | Paleogene | |
| Lodo Formation | Paleogene | |
| Lomita Marl Formation | | |
| Lompico Sandstone | Neogene | |
| Lower Arkose Unit Formation | Neogene | |
| Manix Formation | | |
| Martinez Formation | Paleogene | |
| Mazourka Formation | Ordovician | |
| McCloud Limestone | Permian, Carboniferous | |
| Meganos Formation | Paleogene | |
| Meganos C Formation | Paleogene | |
| Mehrten Formation | Neogene | |
| Merced Formation | Neogene | |
| Merhten Formation | Neogene | |
| Mint Canyon Formation | Neogene | |
| Mission Valley Formation | Paleogene | |
| Modello Formation | Neogene | |
| Modelo Formation | Neogene | |
| Modin Formation | Triassic | |
| Moenkopi Formation | Triassic | |
| Monola Formation | Cambrian | |
| Monterey Formation | Neogene | |
| Monterey Shale | Neogene | |
| Monterey Group/Claremont Shale | Neogene | |
| Montezuma Formation | | |
| Montgomery Creek Formation | Paleogene | |
| Montgomery Limestone | Ordovician | |
| Moraga Formation | Neogene | |
| Moreno Formation | Cretaceous | |
| Moreno Grande Formation | Cretaceous | |
| Mormon Formation | Jurassic | |
| MR Caliente Formation | Neogene | |
| Mt. Eden Formation | Neogene | |
| Mule Spring Limestone | Cambrian | |
| Mulholland Formation | Neogene | |
| Neroly Formation | Neogene | |
| Niguel Formation | Neogene | |
| Nosoni Formation | Permian | |
| NS Caliente Formation | Neogene | |
| Oclese Sand Formation | Neogene | |
| Ocotillo Formation | | |
| Ono Formation | Cretaceous | |
| Orinda Formation | Neogene | |
| Oro Loma Formation | Neogene | |
| Osbourne Canyon Formation | Permian | |
| Otay Formation | | |
| Owens Valley Formation | Permian | |
| Owens Valley Group/Santa Rosa Flat Formation | Permian | |
| Pacheco Formation | Cretaceous | |
| Palm Spring Formation | | |
| Palos Verdes Formation | | |
| Panoche Formation | Cretaceous | |
| Paskenta Formation | Cretaceous | |
| Paso Robles Formation | Neogene | |
| Pauba Formation | | |
| Payton Ranch Limestone | Silurian | |
| Peace Valley Beds Formation | Neogene | |
| Petaluma Formation | Neogene | |
| Pico Formation | Neogene | |
| Pigeon Point Formation | Cretaceous | |
| Pinole Tuff Formation | Neogene | |
| Pismo Formation | Neogene | |
| Pit Formation | Triassic | |
| Pleasants Sandstone | Cretaceous | |
| Plush Ranch Formation | Neogene | |
| Point Loma Formation | Cretaceous | |
| Poleta Formation | Cambrian | |
| Pomerado Conglomerate Formation | Paleogene | |
| Potem Formation | Jurassic | |
| Poway Formation | Paleogene | |
| Puente Formation | Neogene | |
| Puente Shale | Neogene | |
| Punchbowl Formation | Neogene | |
| Purisima Formation | Neogene | |
| Purisimo Formation | Neogene | |
| Redding Formation | Cretaceous | |
| Rincon Formation | Neogene, Paleogene | |
| Rio Dell Formation | | |
| Riverbank Formation | | |
| Robinson Formation | Permian | |
| Rosario Formation | Cretaceous | |
| Rosario Group/Cabrillo Formation | Cretaceous | |
| Rosario Group/Point Loma Formation | Cretaceous | |
| Round Mountain Silt Formation | Neogene | |
| Saline Valley Formation | Cambrian | |
| San Antonio Formation | | |
| San Benito Gravels Formation | | |
| San Diego Formation | Neogene | |
| San Emigdio Formation | Paleogene | |
| San Francisquito Formation | Paleogene, Cretaceous | |
| San Joaquin Formation | Neogene | |
| San Lorenzo Formation | Paleogene | |
| San Lorenzo Group/Pleito Formation | Paleogene | |
| San Lorenzo Group/San Emigdio Formation | Paleogene | |
| San Margarita Sandstone | Neogene | |
| San Mateo Formation | Neogene | |
| San Pablo Formation | Neogene | |
| San Pedro Formation | | |
| San Pedro Sand Formation | | |
| San Timoteo Formation | | |
| Santa Clara Formation | Neogene | |
| Santa Cruz Mudstone Formation | Neogene | |
| Santa Margarita Formation | Neogene | |
| Santa Rosa Flat Formation | Permian | |
| Santa Rosa Island Formation | | |
| Santa Susana Formation | Paleogene | |
| Santiago Formation | Paleogene | |
| Scripps Formation | Paleogene | |
| Sespe Formation | Neogene, Paleogene | |
| Shasta Formation | Cretaceous | |
| Sierra Blanca Limestone | Paleogene | |
| Siesta Formation | Neogene | |
| Silverado Formation | Paleogene | |
| Sisquoc Formation | Neogene | |
| Skooner Gulch Formation | Neogene | |
| St. George Formation | Neogene | |
| Stadium Conglomerate Formation | Paleogene | |
| Sweetwater Formation | Paleogene | |
| Tassajara Formation | Neogene | |
| Tecopa Lake Beds Formation | | |
| Tecuya Formation | | |
| Tejon Formation | Paleogene | |
| Temblor Formation | Neogene, Paleogene | |
| Temecula Arkose Formation | | |
| Thompson Formation | Jurassic | |
| Tick Canyon Formation | | |
| Timm's Point Formation | | |
| Titus Canyon Formation | Paleogene | |
| Topanga Canyon Formation | Neogene | |
| Towsley Formation | Neogene | |
| Tulare Formation | Neogene | |
| Tuna Canyon Formation | Cretaceous | |
| Turlock Lake Formation | | |
| UDC Caliente Formation | Neogene | |
| Union Wash Formation | Triassic | |
| Unnamed Formation | Paleogene | |
| Upper Caliente Formation | Neogene | |
| Upper Etchegoin Formation | | |
| Upper Fernando Formation | Neogene | |
| Upper Mehrten Formation | Neogene | |
| Valmonte Diatomite Formation | Neogene | |
| Vaquero Formation | Neogene | |
| Vaqueros Formation | Neogene, Paleogene | |
| Vedder Sand | Paleogene | |
| Volcanopelagic Succession Group/Unit 1 Formation | Jurassic | |
| Volcanopelagic Succession Group/Unit 2 Formation | Jurassic | |
| Volcanopelagic Succession Group/Unit 3 Formation | Jurassic | |
| Waltham Formation | Cretaceous | |
| Wildcat Formation | Neogene | |
| Wildcat Group/Rio Dell Formation | Neogene | |
| Williams Formation | Cretaceous | |
| Wood Canyon Formation | Cambrian, Ediacaran | |
| Zabriskie Quartzite Formation | Cambrian | |
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